/Engine/Source/Runtime/SlateCore/Public/Layout/BasicLayoutWidgetSlot.h
typedef [SlateAttributePrivate::TSlateMemberAttribute](API\Runtime\SlateCore\Types\Attributes\TSlateMemberAttribute)< [FMargin](API\Runtime\SlateCore\Layout\FMargin), [SlotPaddingInvalidationType](API\Runtime\SlateCore\Layout\TPaddingSingleWidgetSlotMixin\SlotPaddingInval-), TSlateAttributeComparePredicate<>> SlotPaddingAttributeType